Geotechnical Engineer - TS/SCI Poly

Leidos; Reston (VA); On-site; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Geotechnical Engineer to support the analysis of soil and rock properties for underground and hardened facilities.

You will contribute to multidisciplinary teams, applying geotechnical expertise to model complex sites, conduct field surveys, and prepare technical reports for mission-critical government work.

Ideal candidates have TS/SCI clearance, strong geotechnical software knowledge, and experience communicating findings to senior officials.

Qualifications

• Clearance: TS/SCI Polygraph and U.S. Citizenship required.
• BS degree with 8+ years or MS with 6+ years in Engineering Geology, Geology, or Mining/Geotechnical Engineering.
• Strong background in geomechanics, computer modeling, field geophysics, and tunnel/slope rock mass characterization.
• Advanced knowledge of geotechnical software (PLAXIS, SLOPE/W, LPILE, gINT, Slide).
• Experience with GIS tools including ArcGIS Pro/Enterprise and MATLAB.
• Experience in geotechnical research, field data collection, drilling, core logging, mining, tunnel construction/design, trenchless tech, and intelligence analysis.
• Excellent written and verbal communication; ability to brief senior officials.
• Expert-level knowledge of advanced technical principles, theories, and concepts.

Responsibilities

• Solve highly complex problems through technical analysis, reasoning, and interpretation.
• Conduct geotechnical evaluations using open-source information, imagery, and intelligence reporting.
• Use ArcGIS Pro and ArcGIS Enterprise to analyze and document site geology and geotechnical characteristics.
• Prepare briefs and technical reports for customers and colleagues.
• Provide technical support for technologies and sensor systems in denied areas.
• Plan and execute field surveys and data collection.
• Interpret borehole data, soil assessments, and fault studies.
• Produce technical reports and conduct field research at sites across the U.S. and worldwide.
• Develop new technical solutions, products, and standards for mission objectives.
• Brief team members and senior officials on capability trends, analysis, and findings.

Skills

Geomechanics

Computer modeling

Field geophysics

ArcGIS Pro

ArcGIS Enterprise

MATLAB

Education

Bachelor's degree in Engineering Geology/Geology/Mining/Geotechnical Engineering

Tools

PLAXIS

SLOPE/W (GeoStudio)

LPILE

gINT

Slide

ArcGIS Pro

ArcGIS Enterprise

MATLAB

Job description

Leidos Analysis Solutions Group is seeking a Geotechnical Engineer to support geologic and geotechnical analysis for the reverse engineering of underground and hardened facilities. This role focuses on evaluating the properties of soil and rock to help characterize above- and below-ground structures and the surrounding geology.

The successful candidate will join a multidisciplinary team developing methodologies, processes, and technical applications for modeling and assessing complex facilities in support of mission‑critical government work. This position offers the opportunity to apply deep technical expertise to challenging, high‑impact problems in a fast‑paced, high‑energy government environment.

What You’ll Do

• Solve highly complex problems through technical analysis, reasoning, and interpretation.
• Conduct geotechnical evaluations using open-source information, commercial and classified imagery, and intelligence reporting to assess key geological attributes.
• Use geospatial tools such as ArcGIS Pro and ArcGIS Enterprise to analyze and document site geology and geotechnical characteristics.
• Prepare briefings and technical reports to communicate findings to customers and colleagues.
• Provide scientific, technical, and systems engineering support for the development of technologies and techniques, including sensors and sensor systems, used to identify and assess geotechnical properties in denied areas.
• Plan and execute field surveys and data collection efforts.
• Apply geological expertise to the collection and interpretation of borehole data, soil assessments, and fault studies.
• Produce technical reports and conduct field research at sites across the U.S. and worldwide.
• Recommend and develop new technical solutions, products, and standards that support mission objectives.
• Brief team members and senior officials on capability trends, analysis, and findings.

Required Qualifications

• Clearance Required: Candidates for consideration must possess an in-scope and active TS/SCI Polygraph clearance and the ability/willingness to maintain this clearance while holding this position. U.S. Citizenship is required.
• BS degree and 8+ years of relevant experience, or master’s degree and 6+ years of relevant experience in Engineering Geology, Geology, or Mining/Geotechnical Engineering.
• Strong background in geomechanics, computer modeling, field geophysics, and tunnel/slope rock mass characterization.
• Advanced knowledge of geotechnical software such as PLAXIS, SLOPE/W (GeoStudio), LPILE, gINT, and Slide.
• Experience with GIS tools and data, including ArcGIS Pro and ArcGIS Enterprise, and familiarity with MATLAB.
• Experience conducting geotechnical research and field collection.
• Experience in drilling, core logging, mining, tunnel construction and design, trenchless technology, rock mass characterization, and intelligence analysis.
• Excellent written and verbal communication skills, including the ability to brief and interact with senior officials.
• Expert-level knowledge of advanced technical principles, theories, and concepts.

Preferred Qualifications

• Professional Geologist (PG) or Professional Engineer (PE) accreditation.
• Military or defense-related experience.
• Experience with remote sensing applications related to geological or geotechnical analysis.
• Working knowledge of weapons effects and geologic material response under dynamic loading.
• Experience conducting geologic and geophysical fieldwork and data processing, including seismic and GPR investigations.

Why Join Leidos?

At Leidos, you will work on technically challenging problems that have real mission impact. This role offers the chance to combine geotechnical expertise, geospatial analysis, field research, and innovative problem-solving in support of critical national security work.

Original Posting

August 13, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range

Pay Range $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay And Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.